Question

Which of the following is a solution of 7x - 3y = 11 ?
(a) (2,1) (b) (-2,-1) (c) (-2,1) (d) (2,-1)​

Answer 1

Answer:

Answer nub

a) 2,1

Step-by-step explanation:

7x-3y=11

==} 7×2-3×1

==} 14-3

==} 11

proved

Answer 2

Given :-

• Which of the following is a solution of 7x - 3y = 11 ?
• (a) (2,1) (b) (-2,-1) (c) (-2,1) (d) (2,-1)

To Find :-

• Which of the following is a solution of 7x - 3y = 11

Explanation :-

$\tt{in \: \: option \: \: \blue{( a)}} \: \: \: \: \: \: \: \\ \\ \tt{as \: \: we \: \: know} \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt (2,1) = (x,y) \: \: \: \: \: \: \: \: \: \\ \\ \tt \blue{hence} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt{7x - 3y = 11} \: \: \: \: \: \: \: \: \: \\ \\ \tt{ 7(2) - 3(1) = 11 } \\ \\ \tt{14 - 3 = 11} \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt{11 = 11} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \tt \green{hence \: \: ✓} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

Answer :- (a) (2,1)

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